Key scientific ideas – cells 3
Respiration...
Glucose + Oxygen
Carbon dioxide + Water
....is a bit like burning a fuel.
Fuel + Oxygen
The nucleus in a cell contains all the genes
that control all the characteristics of an
organism.
Selective breeding, either by nature or by
humans, can increase the chance of certain
genes passing from one parent to the
offspring.
Carbon dioxide + Water
Like burning, respiration
transfers energy to the
surroundings by heating.
When fertilisation occurs half the
chromosomes from one parent join with half
the chromosomes from the other parent to
produce a new individual.
Photosynthesis
Carbon dioxide
from the air
Photosynthesis requires chlorophyll in plant
cells, light, carbon dioxide and water in order
for the plant to make food.
Water from
the roots
Energy
transferred
by sunlight
The leaves and roots of a plant are adapted so
that photosynthesis can take place efficiently.
Chemicals from smoking, alcohol and drugs
can affect how well different parts of the
human body work.
Exercise helps to keep the body’s organs and
systems working properly.
Food transported to all of the plant
Chromosomes are made up of genes and
genes are made of DNA.
Cell
Tissue
Root hair cell
Root hair tissue
Organ
Root
System
Organism
Veins in leaves
and stems
Tree
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Based upon an idea and approach developed by The Cams Hill Science Consortium.
The formation of sex cells
Parent cell with four chromosomes.
Chromosomes replicate forming pairs of
chromatids.
Pairs of chromosomes arrange themselves
in the centre of the cell.
The chromosomes separate and move to
opposite ends of the cell.
The first cell division occurs.
The chromosomes now separates from
each other and move to opposite ends of
the cells.
The second cell division occurs.
It’s all about respiration, photosynthesis and reproduction
Photosynthesis
enzyme
carbon dioxide + water
glucose + oxygen
Energy transferred by sunlight
Respiration
enzyme
glucose + oxygen
Energy
carbon dioxide + water
Useful vocabulary
Cell
Digestion
Organ
Cell wall
Cell membrane
Chlorophyll
Photosynthesis
Respiration
Chloroplasts
Genes
Fertilisation
Characteristics
Inherited
Selective breeding
Fertilisers
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